Perform an interpolation based on "Gaps".

To interpolate based on "Gaps", first you must select the time range over which you wish to interpolate. Move the cursor into the Grid Manager over the weather element you wish to interpolate. Move the cursor to the start time of the time range you wish to interpolate and press MB1 and drag to define the selected time range. See the section, Select Weather Element and TimeRange for more information. Once this time range is defined, select Grids->Interpolate..., from the GFE's Main Menu. The Interpolate Dialog pops up. Choose "By Gaps". You should see new grids appear within the time range that you selected earlier. See the section, Interpolate Grids for more information.

Perform an interpolation based on "Edited Data". What needs to be done before executing this action?

Before you can interpolate based on edited data, you must first edit some of the grids or else no interpolation will be performed. To accomplish this, edit at least two grids in the GFE. Select these grid with the steps described in the section Select Weather Element and TimeRange. Then from the Main Menu select Grids->Interpolate....  The Interpolate Dialog pops up. Choose "Based on Edited Data". You should see grid appear only in the time period between the grids that you edited. Try this operation on a set of grids that have not been edited. Note that no new grids appear and an error message appears at the bottom of the GFE.

Adjust the values for an entire grid by a specified amount.

To adjust a the value in a grid, select that grid in the Grid Manager. That will make the grid "editable". Next open the Edit Actions Dialog by clicking with MB1 on the icon labeled with the large "E" located in the Button Bar. From this dialog set the Delta Value by selecting "Delta Value..." and entering any value you choose.  Close the Delta Value Dialog. Now from the Edit Actions Dialog select Adjust Value Up or Adjust Value Down. You may see a message dialog warning you that you are about to edit the entire grid. If so, select "Yes" and note that all of the values for the grid that you selected were changed by the amount that you specified.

Adjust the wind speeds for an entire grid by a specified amount.

Adjusting the wind speed values for a grid works just like any other grid. Select the grid you wish to edit in the Grid Manager with a MB1 click. Next open the Edit Actions Dialog, if it is not open already. From this dialog set the delta value by clicking on the button labelled "Delta Value..." and specify an adjust amount.  Close the Delta Value Dialog and select Adjust Value Up or Adjust Value Down from the Edit Actions Dialog. You should see that all of the wind speeds were changed by the amount you specified.

Adjust the values for just a portion of a grid by a specified amount.

To adjust a portion of a grid, you must first select an Edit Area in the Spatial Editor. To do this select the button on the Button Bar that looks like this. Next move your cursor into the Spatial Editor and draw the area over which you want to edit by pressing MB1 and dragging. See the section Define an Edit Area by Hand for more information. Next select Adjust Value Up or Adjust Value Down from the Edit Actions Dialog and you will see the gridpoints you selected previously change in value.

Adjust the wind directions for a selected portion of a grid by a specified amount.

Adjusting the wind direction is a slight change from adjusting the wind speed, described above. Select a wind grid to edit from the Grid Manager. Next, select a portion of the grid as you did in the last exercise. See the section Define an Edit Area by Hand for more information. Now from the Main Menu of the GFE select, GFE->Editing Preferences->Vector Edit Mode->Direction Only. This will restrict all edit operations to wind direction without affecting the wind speed. Now open the Edit Actions Dialog and select Adjust Value Up or Adjust Value Down. Note that with each tool execution the wind direction changes by 10 degrees up or down.

Smooth the data contained in a grid.

The Smooth operation is available from the Edit Actions Dialog.  To Smooth a grid, select a scalar or vector to edit and from the Edit Actions Dialog select "Smooth". You should see that the gradients in the grid are less harsh than they were before the smooth operation.

Pickup a value from the spatial editor's color bar and assign it to a selected Edit Area.

To pickup a value to assign, simply click or drag MB1 or MB2 in the color bar located at the top of the Spatial Editor. Note that as you click or drag the value that you specified is indicated by the shadowed number displayed on the color bar. Now that you have specified a pickup value, you can select an area as described in the section Define an Edit Area by Hand. Finally, from the Edit Action menu select Assign Value. You should see the value of the area that you selected change to the current pickup value.

Create a new weather value of your choice and use it to assign weather to a selected Edit Area.

To create a new weather value, you first need to select a Wx grid from Grid Manager. Select an area in the Spatial editor to be changed. Next, from the color bar located at the top of the Spatial Editor, MB3 press and hold to display the pop-up menu. From the pop-up menu select Set Pickup Value.... Now you should see the Set Weather Dialog appear. Use this dialog to define a new weather type, coverage/probability, and intensity. See the section Set Weather Dialog for more information. When you have successfully defined your new weather value, click on Assign Value. You should see tool assign your weather value to the selected area.

You can also use a quicker way to set the weather, if the weather you are setting is fairly common. Instead of choosing Set Pickup Value... from the popup menu, you can choose a value under Set To Common Values... The values appearing in this menu are site-configurable.
 

Create a new discrete value of your choice and use it to assign discrete data to a selected Edit Area.

To create a new discrete value, you first need to select a discrete grid from Grid Manager. The "Headlines" grid is an example of a discrete grid. Select an area in the Spatial editor to be changed. Next, from the color bar located at the top of the Spatial Editor, MB3 press and hold to display the pop-up menu. From the pop-up menu select Set Pickup Value.... Now you should see the Set Discrete Value Dialog appear. Use this dialog to define a new value. See the section Set Discrete Value Dialog for more information.  When you have successfully defined your new value, click on Assign Value. You should see tool assign your discrete value to the selected area.

You can also use a quicker way to set the discrete value, if the discrete value you are setting is fairly common. Instead of choosing Set Pickup Value... from the popup menu, you can choose a value under Set To Common Values... The values appearing in this menu are site-configurable.